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조달기간이 확률적인 경우의 예비품 주문정책

A Spare Ordering Policy with Random Lead Times

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참고문헌

주제분류학제간연구

초록

Abstract

A generalized spare ordering policy is treated in this paper. If the operating unit fails before a scheduled ordering time an expedited order is placed at the failure time instant, otherwise a regular order for a spare is placed at the scheduled time. The original unit is replaced when the ordered spare is delivered. The lifetime, regular and expedited lead times have general distributions. The problem is to find the optimum ordering time which minimizes the expected cost rate including the observation, ordering, uptime and downtime costs. Some properties regarding the optimal policy are derived. To explain the spare ordering policy a numerical example is also included.

참고문헌 (6)

  1. "Mathematical Theory of Reliability" (1965)
  2. "Ordering Policies with Two Types of Lead Times", pp.225~229 (1977)
  3. "Ordering Policies with Random Lead Times", pp.737~741 (1981)
  4. "An Ordering Policy with Lead Time International Journal of Systems Science", pp.1091~1095 (1977)
  5. "A Note on Ordering Policies with Cost of Observation and Lead Times International Journal of Production Economics", pp.91~97 (1993)
  6. "A Survey of Maintenance Policies of Deteriorating Systems", 139, pp.469~489 (2002)

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